The Dance of Slayers and Witches

Tanjiro and Nezuko Kamado's entire world was taken from then on a snowy day in the mountains. And it seems the monster responsible is plotting to do the same again, but this time, to the people from a world of magic, witches, and monsters different from those of their own world. One ruled by a cold tyrant, and one far too similar to that nightmarish demon. A new dance begins.